package com.sky.service.user.Impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.JwtClaimsConstant;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.user.UserMapper;
import com.sky.properties.JwtProperties;
import com.sky.properties.WeChatProperties;
import com.sky.service.user.UserService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.JwtUtil;
import com.sky.vo.UserLoginVO;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

/**
 * @author cgj
 * @Description
 * @create 2025-10-31 下午4:04
 */
@Service
public class UserServiceImpl implements UserService {

    @Autowired
    private JwtProperties jwtProperties;
    @Autowired
    private WeChatProperties weChatProperties;

    private static final String WX_LOGIN_URL="https://api.weixin.qq.com/sns/jscode2session";
    @Autowired
    private UserMapper userMapper;

    @Override
    public UserLoginVO login(UserLoginDTO userLoginDTO) {

        Map<String, Object> claims = new HashMap<>();
        String openid = getOpenId(userLoginDTO);
        if (openid==null)
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        User user = userMapper.login(openid);
        if (user==null){
            user= User.builder()
                    .openid(openid)
                    .createTime(LocalDateTime.now())
                    .build();
            userMapper.insert(user);
        }
        claims.put(JwtClaimsConstant.USER_ID,user.getId());
        String token = JwtUtil.createJWT(jwtProperties.getUserSecretKey(), jwtProperties.getUserTtl(), claims);
        return UserLoginVO.builder()
                .id(user.getId())
                .openid(user.getOpenid())
                .token(token)
                .build();

    }

    private String getOpenId(UserLoginDTO userLoginDTO) {
        Map<String, String> map = new HashMap<>();

        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code",userLoginDTO.getCode());
        map.put("grant_type","authorization_code");
        String json = HttpClientUtil.doGet(WX_LOGIN_URL, map);
        JSONObject jsonObject = JSON.parseObject(json);
        return jsonObject.getString("openid");//返回获取key的名称为openid的json格式对应的值
    }
}
